take a look at that black plastic housing that sits on the passenger wheel well, you will see two metal clips that hold the top on. it also looks like there is a vent going from the headlights to the ecm in order to cool it? once you remove the cover, you'll see a silver metal module about 5"x5" by about 1.5" thick. I'm supposing this generates heat is why they put it there instead of the passenger compartment, where it could be better protected from teh elements...